Improvement in machines for dressing leather



N.PETEHS. PMOTO-LITMOGRAPHER, WASHINGTON. D. C, Y

@anni Ctililrr.

EDWARD EITZHENRY, 0F BOSTON, MASSACHUSETTS.

Letters Patent No; 100,387, dated March 1, 1870.

IMPROVEMENT IN MACHINES FOR DRESSING LEATHER.

The Schedule referred to in these Letters Patent and making part of thesame To all persons to whom these presents may come:

Be it known that I, EDWARD FITZHENmg-of Boston, in the county ofSuffolk, and State of Massachusetts, have invented certain new anduseful Improvements in Machinery for Dressing, Sett-ing Ont, orPreparing Skins or Leather; and I do hereby declare the following to bea full and complete description thereof, reference being had totheaccompanyingdrawings making part thereof.

My improvements relate to mechanism for giving.

motion to the tool-carriage of the machine, also to the bed or table andthe supports thereof.

Oft-he said drawings- Figure l is a plan indicative of the arrangementof the arms' of the table-supporters;

Fignre2 is a horizontal section taken on the line 1 2 ofiig. 3, andthrough the'collar NV, for connecting the arms or braces T 'l" of theradial arms of the table-supporter Figure 3 is a side elevation of themachine;

Figure 4 is an end 'view of it with the exception of certain parts, viz:the ily-wheel and connecting-rod thereof;

Figure 5 is an edge elevation 5 and Figure 8, a transverse section ofthe table.

Figures (i and 7 are illustrations of one of the handles of the table.

With respect to the mechanism for operating the tool-carriage, shown atN, in the drawings, instead of supporting such carriage by means ofhorizontal rails or ways, such as ordinarily employed, which areobjectionable on some accounts, I joint the said carriage to the lowerpart of a furcated pendulons-rod,

P, made of suitable material.

Vere the upper joint of this rod supported by a stationary bearing, itslower extremity or part Q, which is jointed to the tool-carriage, woulddescribe the arc of a circle during a vibratory movement of the rod, andof course the tool-carriage would be correspondingly moved.

It being desirable to have the tool-carriage moved in ahorizontal planein order that each setof its tools while in operation on a skin restingon' the table, may be so, or very nearly so, moved, Isupport the upperend of the rod P by means of a bell-crank, A, (see figs. 3 and 4,)pivoted to and within these stationary brackets or hangers B B1 B?.

The shaft of this crank has projected from it a toothed sector, D, whichengages with another suchi sector, E. This latter is pi-voted to thelonger brackets B1 B2, and connected to a bar, F, from whose lowerextremity or part a` pin or stud, b, extends into a slot, m, made withinthe rod P, the whole being as repre- "sentedin the drawings.

The two vtoothed sectors have equal radii.- The tool-carriage, shown atN, (provided withA a arranged within a tnbular'colnmn or pillar R.

rocker-plate and tool-carriers and springs thereto as in other machinesfor like purposes,) has a connectingrod bolted to and extended from itsrocker-plate, such rod being pivoted to a crank-pin, n, extended fromone ofthe arms of a ily-wheel, V.

When the'tiy-wheel is put in revolution, a reciprocating movement willbe imparte-d to the tool-carriage, which, by means of the pendnlons barP and its appurtenances, as hereinbefore described, will be moved in ahorizont-al plane, the tendency of the bar P to swing in a circular pathbeing counteracted by the conjoint operations of the toothed sectors,the crank and the bar F.

The supporter of the table H is represented as a series of arms, T T T,projected from a common hub or central connection, from which'thereextends downward a spindle or pivot, S. This spindle enters and isspindle, guided so as to be capable of moving vertically within thecolumn, rests at its foot on the shorter arm of a balance-lever, X. Eachof the arms 'l may be of metal, and be grooved or channeled lengthwiseto receive a wooden bar, U.

From the said arms T oblique braces T extend to an annulus or collar, W,encompassing the post R and applied to it, so as to be capable of beingslid vertically thereon. 1 The collar should not revolve on the post'.

The lever X, provided with one or more weights applied to it near itsouter end, serves with the said weights to nearly balance the table andits supporter, the said table being sustained on a series of invertedcasters, projected upward from the arms T of the supporter. By pressingthe lever X downward, the supporter may be forced upward, so as toelevate the table, and thus when there is a skin upon it, move thelatter up to the tools.

lA spring hook, /r, attached to the end of the lever X, serves, whenhooked into a ring or staple, s, xed in the floor on which the machinemay be supported, to maintain the lever in a depressed position, andthereby keep the table up to a working position relatively to the tools.f

The table instead of being solid or made in the usual manner, may beconstructed of small joists or timbers t t t, arranged parallel to eachother, and with spaces u u. 'u between them, these timbers being setupedgewise and rebated at their corners to receivcboards -`vo r, the wholebeing as represented in fig. 8. The series of timbers and boards, afterheilig glued together and provided with edge or boundary pieces of woodnuts at their ends.

The object of so constructing the table is to render it light andstrong, and not liable to warp. lIt also enables the table to be madewithout knots in the the post R, the spindle S, and the table-supporter.

wood, which, when in it, are liable to do injury to l(.he Also, thetable as made of the series of rebated skins while being worked thereon.joists ortimbers and theriutermediate and edgeboards I claimandlioldingrods or bolts, arranged as specified.

The combination of the crank A, the two toothed EDWARD FITZHENRY.sectors D E, and the bar F, with the pendnlous bar e P, applied to or tobe used with the tool-carriage, as Witnesses: described. J. U. ZUST,

Also, the combination of the balance levexX with J. 'A. MGKEANL

